RUIZ, I. About the theory and empirical analysis of “the persistence of profit”and its applicability to Colombia. Ecos de Economía, [S. l.], v. 7, n. 16, p. 65–76, 2003. Disponível em: https://publicaciones.eafit.edu.co/index.php/ecos-economia/article/view/2000. Acesso em: 12 may. 2024.